8.19 First Blue Star - Hatching the Egg
After the Marshal left the dining hall, he didn't go to Feng Jing's place right away but instead found some corner and smoked for a bit. The information he had learned in that hall just now was too shocking. Especially since his lover is totally involved in whatever conspiracy the Federation is planning to do. He had always thought that Marshal Janus had been targeting him because hated him for reaching the same position at a young age.
Now learning that the old marshal had not hated him but wants to kill him because he is in the way of becoming the leader of the federation. Altair Sirius thinks that the old man is being stupid. Just based on the relationship he has with the Fengs and obvious actions of protecting them is enough for him to laugh at his foolishness. Does he really need to harm those he loves to protect them? At the very least, he isn't willing to do it. It can never be called protection if you are going to harm the one you wanted to protect.